Patents by Inventor Don S. Pender

Don S. Pender has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus with a shunt system for processing printed circuit board substrates
    Patent number: 5288323
    Abstract: Apparatus for contacting a circuit board substrate with etching fluid or some other chemical includes a conveyor system comprised of upper and lower rotating disks for receiving and transporting the circuit board substrate while the substrate is contacted with fluid. The apparatus includes a labyrinth seal which is used to prevent fluid from escaping from the apparatus. A shunting system permits the type of fluid applied to the substrate to be readily altered. Housing units incorporated in the apparatus are readily secured together with a resilient clamp.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: February 22, 1994
    Inventor: Don S. Pender